Efficient route update protocol for wireless sensor network
First Claim
1. A route update method for a communication system which comprises a sensor node for collecting information of a target within a predetermined range, and a sink node receiving the information of the target from the sensor node through a first route built therebetween for target information transmission, the route update method updating the first route from the sensor nodes to the sink node, comprising:
- collecting the information of the target via the sensor node, and broadcasting a routing request message when the information of the target is not received;
comparing information contained in the routing request message received from a first sensor node of a first sensor node group on the first route, with information contained in the routing request message received from a second sensor node of a second sensor node group at a predetermined distance from the first sensor node group; and
updating the first route by using the sensor node selected based on the comparison.
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Abstract
An apparatus and method thereof for route update for a communication system including a target, a sensor node collecting information of the target within a predetermined range, and a sink node receiving the information of the target from the sensor node through a first route built therebetween for target information transmission. The sensor node collects the information of the target, and broadcasts a routing request message when the information of the target is not received anymore. The information contained in the routing request message received from a first sensor node of a first sensor node on the first route is compared with the information contained in the routing request message received from a second sensor node of a second sensor node group at a predetermined distance from the first sensor node group. The first route is updated by using the sensor node selected based on the comparison.
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Citations
15 Claims
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1. A route update method for a communication system which comprises a sensor node for collecting information of a target within a predetermined range, and a sink node receiving the information of the target from the sensor node through a first route built therebetween for target information transmission, the route update method updating the first route from the sensor nodes to the sink node, comprising:
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collecting the information of the target via the sensor node, and broadcasting a routing request message when the information of the target is not received;
comparing information contained in the routing request message received from a first sensor node of a first sensor node group on the first route, with information contained in the routing request message received from a second sensor node of a second sensor node group at a predetermined distance from the first sensor node group; and
updating the first route by using the sensor node selected based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A routing apparatus of a communication system, the routing appartus comprising:
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a plurality of sensor nodes for collecting information of a target within a predetermined range;
a sink node receiving the information of the target via a certain route, the routing apparatus for routing a path between at least one of the sensor nodes and the sink node for target information transmission, wherein the sensor nodes collect the information of the target and broadcast a routing request message, when the information of the target is not received from the certain route, and wherein a first sensor node of a first sensor node group of the plurality of sensor nodes being positioned on the certain route; and
a second sensor node of a second sensor node group of the plurality of sensor nodes within a predetermined distance from the first sensor node group, the second sensor node comparing an information contained in the routing request message from the first sensor node with an information contained in the routing request message from the second sensor node. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification